Here's how Sally Ride knew she was special: The day she was assigned to her first space flight, she was summoned to meet with Chris Kraft. Kraft was the soon-to-retire director of the Manned Spaceflight Center in Houston

The act of feeding 7 billion plus human beings already puts more stress on the planet than any other single activity, so we're going to need to figure out a way to produce more food without further damaging the environment